Cyclometer



(No ModeL) 2 Sheets-Sheet. 1. G. H. LAMSON.

' GYGLOMETER.

N0. 320,145. Patented June 16, 1885.

(No Model.) 2 Sheets-Sheet 2. C. H. LAMSON.

GYOLOMETER.

No. 320,145. I Patented June 16, 1885.

UNITED STATES CHARLES H. LAMSON, OF PORTLAND, MAINE.

CYCLO iV! ETER.

PATENT @Fr-ion.

SPECKEICATIQN forming part of Letters Patent No. 320,145, dated June 16,1885.

(No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES ll. LAMsoN, of Portland, in the county ot'Cumberland and State of Maine, have invented new and useful Improvementsin Cyclometers, of which the following is a specification.

This is a cyclometer intended particularly to be attached to bicyclesand other velocipedes, and it is constructed especially with the View ofmaking its op( ration and registration positive and without possibilityoil' failure, re-

gardless of the speed at which the wheel whose revolutions are beingregistered is revolvinfr.

ln the accompanying drawings, in which similar letters of referenceindicatelike parts, Figure l is a view looking` from the right side ofportions of a bicycle-wheel, fork, and crank with my eyclometer appliedin position for use. Fig. 2 is a view ofthe same, looking from the rear.Fig. 3 is a front elevation ot' the cyclometer. Fig. 4 is a verticalsection showing the interior mechanism in rear elevation. Fig. 5 is anelevation of a portion of the inside of the fork with the cam attachedand the roll by which said cam operates the cyclometer in position. Fig.6 is a vertical section taken on the same line as that shown in Fig. 4,illustrating the modification. Fig. 7 is an elevation of a portion ofthe inside of the fork with mechanism attached adapted to the saidmodication.

A A represent the spokes of the drivingwheel of a bicycle.

B is a portion of the right side of the fork or frame, and G isaportionofthe right crank.

D is the cyclometer box or case, secured to one of the spokes A next theright side ofthe fork B. The box D lies inside the wheel with its rearside to the right fork and its face to the'left side of the machine, sothat the reader stands on the left side of the wheel to examine itsrecord. It is secured to the spoke by clamps a a, held against theintermediate spoke by screws c, (not newin this inventiom) and also bythe lower additionalclamps, b b', the former of which is widened asshown in Fig. 1, so as to cover a plurality of spokes, preferably three,in order that the cyclometer may during its entire action be fast on thesame plane as the driving-wheel A.

E is aclip, of substantially the shape shown in Figs. l, 2, and 5, heldupon the right side ot' the l'ork by set-screws c or other suitablemeans, and provided with the cam-groove E', which operates afriction-roller, F, on the free or outer end of an arm, F, rigidlysecured to a shaft, G, passing through a corresponding opening in therear side of the case D, said shaft being connected with the interiorregistering n'iechanism of the cyclometer.

The cyclometeron the spoke and the cam on the fork are both placed atabout the same distance from the axis of the-wheel, so that with eachrevolution of the wheel the roll F on the arm or lever F will, when thecyclometer reaches the cam, enter the cam-groove and pass through it andout at the opposite end on the other edge ot' the fork.

Fig. l shows the roll about to enter the groove. Figs. 2 and 5 show t-herollin the groove. Owing tothe decided curve in the cam-groove adownward motion is given to the roll as the cyclometer passes the fork,such motion ol' course causing the lever F to swing down and partiallyrotate the shaft D, thus actuating the mechanism within the cyclometerand causing the revolution ofthe wheel to be registered. Thus it will beseen that the operation ot the cyclometer is positive without regard tothe speed at which the vehicle is being propelled, and this is theprincipal advantage which it possesses over the cyclometers generally inuse, which depend upon gravity to operate them, and which often, whenthe wheel is revolving at a high speed, fail to register, owing to thepower of gravity being counteraeted or overcome by the centrifugal forceacting upon the weights or pendulnms or other depending parts. The shaftG, to which the lever F is fast, extends through the casing and issquared (see Fig. et) to receive the lever lfLwhich, when the lever F ismoved, moves with it, and by bearing against a projection, f, on thebellcrank lever l, pivoted atg to the casing of the cyclomcter, movessaid lever on its pivot g, and by means ofthe pawl .l moves theratchet-wheel K forward one tooth. A pinion, L, is fast to the sameshaft K as the ratchet-wheel li, and meshes into a gear-wheel,l\jl,having the proper relative number of teeth to cause the index` IOO handN 011 the dial N to make one revolution when the bicycle-wheel has maderevolutions enough to cover one mile. By means of the suitable pawls andratehets, O P RS T U V NV, the face of the cyclometer is allowed toregister/units, tens, hundreds, and thousands of x,m'iles. Thismechanism not being novel in this invention,I will not describe it moreparticularly.

This cyclometer is particularly dust-proof, for the reason that there isbut one opening through the case-viz., that through which the shaft Gpassesand this opening is nearly filled by said shaft and may be tightlyclosed, if desired,by pressing the shoulder of the shaft against theedge by means of a spring. If desired, the position of the cyclometerand cam may be reversed, the cyclometer being placed on the fork, andthe cam on a spoke or hub of the wheel. The roller F is not essential tothe working of the device, but merely facilitates it.

In attaching the device to a tricycle the cyelometer would probably besecured to the iixed axle outside the wheel, and the cam to the hubofthe Wheel, or vice versa.

In the modilication shown in Figs. 6 and 7, the clip E is provided withan inclined cam instead of a grooved one, thus necessitating the use ofa spring, i, inside the case to return the levers F,II, and I.

I do not eonne myself to the shape of the cam shown in the drawings, asit may be somewhat varied and still be practical.

This cyclometer is light, easily attached and read, out ofthe Way of thelamp, not liable to be struck by flying mud, as it can be placed uponany part of a spoke,and, by modi ications of the clamp and cam, may beattached to various parts of a bicycle or trieycle.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-'- l. A cyclometer for bicycles and othervelocipedes, adapted to be rigidly secured to one Vof the spokes of thedriving-Wheel and provided With an arm or lever connected with theregistering mechanism thereof, in combination with a cam secured to thcfork or frame, said arm or lever being adapted to be engaged by said camwhen the cyclometer passes the fork during its revolution, substantiallyas and for the purpose set forth.

2. A cyclometer for bicycles and other velocipedes, adapted to besecured to one of the spokes of the driving-wheel and provided with thearm or lever F, connected with the registering mechanism thereof, incombina-v tion with the curved cam-clip E E,seeured to the fork orframe, substantially as and forthe purpose described.

3. The combination,with the casi ng or box of the cyclometer, of a clampor bracket for securing the same to the spokes ofthe wheel of a bicycleor other velocipede, said clamp or bracket extending transversely overor across two or more of said spokes for the purpose ol' retaining thecyclometer on the same plane as the Wheel, substantially as and for thepurpose set forth.

CHARLES II. LAMSON.

Witnesses:

FRED W. PALMER, LYNN BUCKLEY.

